diff --git a/debian-add-user.sh b/debian-add-user.sh
index 80522e6..2e2cf54 100755
--- a/debian-add-user.sh
+++ b/debian-add-user.sh
@@ -28,10 +28,17 @@ sed -i "s|/home/$NewUser:/bin/sh$|/home/$NewUser:/bin/bash|g" /etc/passwd
 # Debian 9 default to empty
 sed -i "s|/home/$NewUser:$|/home/$NewUser:/bin/bash|g" /etc/passwd
 
-echo "=== Allow the new user $NewUser to sudo without password"
-#usermod -a -G sudo $NewUser # Add to sudo group # Option 1: add user to %sudo group
-echo "$NewUser ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers.d/${NewUser//./-} # Option 2: add a user file into /etc/sudoers.d/
-chmod a-w /etc/sudoers.d/${NewUser//./-}
+echo "=== Allow the new user $NewUser to sudo without password? <y> for yes, <<anything else>> for no"
+read -p ">>> " AllowSudo
+if [ $AllowSudo ] && [ $AllowSudo == "y" ]
+then
+  #usermod -a -G sudo $NewUser # Add to sudo group # Option 1: add user to %sudo group
+  echo "$NewUser ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers.d/${NewUser//./-} # Option 2: add a user file into /etc/sudoers.d/
+  chmod a-w /etc/sudoers.d/${NewUser//./-}
+  echo "Added /etc/sudoers.d/${NewUser//./-} to allow sudo without password"
+else
+  echo "--- Nothing changed."
+fi
 echo
 
 # 注意，由 root 为新用户创建的配置文件的 owner 是 root，而不是新用户
@@ -40,8 +47,8 @@ then
   source /faronear/fon/sysconfig/home-config.sh /faronear/fon/sysconfig/nixhome /home/$NewUser
 else
   echo "=== Configure $NewUser home with standard scripts? <y> for yes, <<anything else>> for no"
-  read -p ">>> " YesOrNo
-  if [ $YesOrNo ] && [ $YesOrNo = 'y' ]
+  read -p ">>> " ConfigHome
+  if [ $ConfigHome ] && [ $ConfigHome = 'y' ]
   then
     source /faronear/fon/sysconfig/home-config.sh /faronear/fon/sysconfig/nixhome /home/$NewUser
   else